2018 V90 Start Stop

Hi: I am new to this forum, and have recently purchased a new 2018 V90 Inscription. I'd appreciate any insight anyone may have on whether Volvo would or even could provide an update whereby the Start/Stop could be more permanently disabled. I was at the dealership today talking to a sales person about something else, and she indicated that the 2019 models (with what appears to be identical Sensus) have the ability to permanently disable the feature. When I say permanently, I mean that it doesn't reset each time the vehicle is turned off. As much as I like to save fuel, and minimize the release pollutants, I just can't get used to the way it cuts out. I feel like the second or two delay could be unsafe for me. If anyone has any thoughts about this, I would greatly appreciate it. Thank you.